HD28i (Internal)
HD28i (Internal)
Delivering a constant supply of hot water
The Rinnai HD28i (internal) is a heavy duty commercial room-sealed internal continuous flow hot water system. It is always delivering a constant supply of hot water at a stable outlet temperature, no commercial hot water task is too much for the Rinnai HD28i Heavy Duty Continuous Flow Hot Water system. Thanks to Japanese quality and continuous design improvements this water heater has an inbuilt controller. It only consumes gas when in operation and achieves an excellent 6.0 Star energy rating.
What’s more, the HD28i’s flexible flueing options allow it to be installed virtually anywhere.
For Internal applications only.
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Ideal for cafe’s, small retail, and hairdressers
6.0 star efficiency rating
Internal model
Ideal applications include:
- Cafés
- Hairdressing salons
- Butchers
- Laundromats with domestic style top loader machines
- Childcare centres
- Small amenity blocks
- Factories
Commercial warranty
- 5 year heat exchange warranty
- 3 year parts and labour warranty
Related products/Add-ons
The product information on this website (comprising product brochures, warranty information, installation manuals, diagrams, specifications and representations) relates to current products. This information may be different for superseded products. For superseded products please contact Rinnai to confirm product information.
Rinnai – HD28 internal Heavy Duty Continuous Flow Hot Water | Values | |||
Dimensions | Height | mm | 583 | |
Width | 357 | |||
Depth | 245 – 278 | |||
Weight | kg | 21 | ||
Colours | Silver | |||
Factory Default Temperature | C | 50 or 75 | ||
Water Pressure | Minimum | kPa | 220 | |
Maximum | 1000 | |||
Gas Rate | Minimum | NG / LPG | 11 | |
Maximum | 210 | |||
Flow Rate | 25° C/Max | L / min | 28 / 37 | |
Thermal Efficiency Rating | % | 97 | ||
Connection Sizes | Gas / Hot / Cold | 20 / 20 / 20 | ||
Status Monitor | Yes | |||
Dimensions | Height Inc Brackets | mm | 653 | |
Hot Water Outlet | From Wall | 91 – 214 | ||
Left from Centre | 110 | |||
Cold Water Inlet | From Wall | 70 – 103 | ||
Right from Centre | 27 | |||
Gas Connection | From Wall | 99 – 132 | ||
Right from Centre | 89 | |||
Hot Connection Length | From Base | 36 | ||
Cold Connection Length | 46 | |||
Gas Connection Length | 36 | |||
Condensate Connection Length | N / A |
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Rinnai HD28i (Internal) Heavy Duty Continuous Flow Hot Water (flue front)Preview
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Rinnai HD28i (Internal) Heavy Duty Continuous Flow Hot Water (flue left)Preview
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Rinnai HD28i (Internal) Heavy Duty Continuous Flow Hot Water (flue right)Preview
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Rinnai HD28i (Internal) Heavy Duty Continuous Flow Hot Water (flue pipes)Preview
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Rinnai HD28i (Internal) Heavy Duty Continuous Flow Hot Water (flue cupboard)Preview
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Rinnai HD28i (Internal) Heavy Duty Continuous Flow Hot Water (flue interior)Preview
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Rinnai HD28i (Internal) Heavy Duty Continuous Flow Hot Water (top)Preview
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Rinnai HD28i (Internal) Heavy Duty Continuous Flow Hot Water (brackets under)Preview
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Rinnai HD28i (Internal) Heavy Duty Continuous Flow Hot Water Control PanelPreview

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Infinity Gas Continuous Flow Hot Water Operation and Installation Manual Preview
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HD28 Heavy Duty Continuous Flow Hot Water Specification Guide Preview
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Commercial Hot Water Warranty Booklet Preview
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Flue Installation Manual Preview
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Plans - HD28i (Internal) Heavy Duty Continuous Flow Hot Water (PDF) Preview